Jar closure



F. FIESE JAR CLOSURE Feb. 18, 1936.

Filed Nov. 24, 1935 Y W m 4 a m T Attorney V Patented Feb. 18, 1936UNITED STATES PATENT OFFICE JAB CLOSURE Frank Fiese, North Platte, Nebr.Application November 24, 1933, Serial No. 699.608 1 Claim. (Cl. 21545)This invention relates to receptacle closures and has as its object theprovision of an improved cap for Mason" jars and the like.

In accordance with the present invention a cap of the characterindicated can be used for sealing the jar and in conjunction with, orauxiliary to, the usual screw cap.

In the drawing: Figure 1 is a vertical section showing the improved cap.

Figure 2 is a top plan view. Figure 3 is a plan view of one form ofsealing ring, and

Figure 4 is a sectional view through the ring. 16 Referring to thedrawing by numerals, 5 indicates a glass jar having an externallythreaded neck 6.

My improved cap I is formed of rubber or other suitable, elasticmaterial; and is cupshaped. The cap is adapted to fit down into the neck6 as shown, and at the top thereof, the rim or wall of the cap isprovided with an outturned flange 8 that rests on the edge of the neck 6of the jar. Thus, when in place, the usual screw cap (not shown) may bescrewed into the jar neck 6 without interference from the cap I. A splitresilient sealing ring 9 of wire or the like is provided, and is adaptedto fit within the 30 cap 1 to force the wall or rim of the cap up tightagainst the inside of the jar neck 6. In accordance with the inventionthe neck 6 is provided with an internal groove l0, and when ring 9expands it will force a portion of the wall of the cap into this grooveIt], in a manner shown in Figure 1 and thereby effectively seal the jar.

To facilitate contraction of the ring, for the positioning and removalthereof with reference 6 to cap I the ends of the ring are bentbackwardly as at 9a and inwardly of the ring as at 9b to provideprojections II which inclines above the plane of the ring proper, asshown in Figure 4, so that they may be easily grasped by the hand 10 orsuitable tool, as for e. g. pliers, to draw the ends of the ringinwardly toward one another to contract the ring.

As shown in Figure 2 the ring may be provided with an inwardly extendingU bend I2 to permit a portion of the rim of the cap 1 to work inwardlyaway from the wall of the jar neck 6 in a manner to efiect an escape ofthe steam where it is desired to cold pack or can the fruit or the like.For "straight canning a ring such as shown in Figure 3 would be used.

What is claimed is:

In a jar closure, a flexible jar insertable cap,

a slit expansible retaining ring for engagement into the cap to expandthe cap against the inside of the jar, the ends of the ring being bentbackwardly in opposite direction, and a projection on the ends of thesaid backwardly bent portions, the said projection extending inwardly ofthe ring proper, said backwardly bent portions adapted for overlappingrelation when the ring is engaged with a cap. FRANK FIESE.

